Abstract: In one aspect, the present invention provides a functionalized monodisperse polylysine comprising a linear monodisperse polylysine chain comprising constituent lysine monomer residues containing appended C4-C24 polyethylene glycol groups and at least one appended fluorescent dye moiety is provided.

Abstract: The present disclosure generally relates to systems and methods for identifying the boundaries of tumors and assessing quantitatively the ability of dyes to highlight a tumor's boundary. In accordance with these methods and systems, images are taken of subjects administered agents labeled with dyes. After accessing the images, tumors are selected and routines employed to both identify the boundaries of the tumors, as well as, to quantify various aspects of the tumor boundaries. From these quantifiable descriptors the performances of the various dyes to highlight the boundaries of tumors are evaluated.

Abstract: The invention relates to imaging methods and systems. The systems may comprise a white light source configured to generate light in a first wavelength range, an excitation source configured to generate light at one or more wavelengths for exciting a fluorescent substance, a first detector configured to acquire reflectance image data that represents white light reflected from a subject, and a second detector configured to acquire fluorescence image data that represents fluorescence emissions from the subject. At least one of the one or more wavelengths generated by the excitation light source is within the first wavelength range of the white light source. The fluorescent substance may be, for example, a fluorescent dye that is injected into a patient before or during a surgery. The system may also include an image processing engine and a display.

Abstract: Provided herein are image-enhancing agents that are useful for managing disease by imaging disease tissue using magnetic resonance imaging techniques, optical imaging techniques, and a combination of magnetic resonance imaging techniques and optical imaging techniques. Also provided are methods of imaging disease tissue and managing disease using the image-enhancing agents.